Product description Size: 37*25mm Color: blue, white, black Material: Plastic Magnet Package content: 1pcs suction fish tank brush 1.High Quality Materials: Made of high quality ABS material, it is one piece with good sealing and can prevent water from entering the brush body. It is non-toxic, environmentally friendly, durable and has a long lifespan. 2.Powerful magnetism: Each aquarium brush has a magnet, strong magnetic attraction, better absorption capacity and makes the magnetic force more permanent. 3.Easy to use: the inner and outer brush heads are firmly connected to each other, just need to move the outside, and the cleaning effect on both sides of the aquarium is better. 4.Practical and Convenient: The design is simple, compact and portable, and more convenient to use. Effectively clean up the algae in the aquarium without worrying about getting your hands dirty. 5.Humanization design: Comfortable non-slip design, easy to hold and use, the pressure is more balanced and reasonable, it can clean dirty residue and protect the glass.